Automatic weighing apparatus.



No. 637,897. Patented Nov. 28, I899. M. E. REXSERT.

AUTOMATIC WEIGHING APPARATUS. 7

(Application filed Dec. 24, 197.) I (No Model.) 2 Shuts-Sheet I.

:oOoooOO 000000 No Model.)

Patented Nov. 28, I899.

M. E. REISERT.

AUTOMATIC WEIGHING APPARATUS.

(Application filed Dec. 24, 1897.)

2 Sheets-Sheet 2.

I terial is fed from a hopper-to a self-tilting and UNITED STATES PATENT O'FFlCE.

MICHAEL EDUARD REISERI OF HENNEF-ON-THE-SIEG, GERMANlf.

AUT..OMA'; LC w ElGH lN G APPARATUS.

SPECIFICATION forming part Of Letters Patent NO. 637,897, dated. November 28, 189 9;

Application filed December 24,,1897. Serial No. 663,379- (No model.)

To all whom it may concern:

Beit known that I, MICHAEL EDUARD REI:

,Apparatus, (for which I have obtained a'patent in Germany, No. 82,501, dated May 12,

1894', and in Great Britain, No. 19,887, dated October 18, 1894,) of which the following isa specification.

'.lhis invention has relation to weighing-ma chines for weighing more or less coarse granular materials the grains or lumps of which are of irregular size, in which machines the maself-righting receptacle hung from the scalebeam; and said invention has for its object certain improvements on machines of this classjshown and described in my application .for patent, Serial No. 663,378, filed December 24, 1898. v

In the type of machine referred to the re ceptacle begins to descend the moment the load thereon is approximately equal to the weight on the weight-pan, at which time the feed-cut-ofi appliances are set in operation and graduallycut off the feed, this being completed about the time the scale-beam is in equipoise. In the weighing of finely-divided materials or granular-materials the grains of which are small and of substantially uniform size the quantity of the material fed to the receptacle is, gradually, yet somewhat rapidly, cut on to prevent overfeed, the

live-force of the material having-but little infiuence onthe receptacle. When handling coarse granular materials, especially such whose grains, or, more properly, lumps, are of irregular size and of considerable weight, the

'live force hasa considerable influence on the I receptacle and causes it to descend-some ap preciable time before the quantity of material actually necessary to balance the Weight on the weight-pan has reached the receptacle, so that if the feed werecut off the moment the receptacle co'mmence'd'to descend .under its load 'and under the liv force .of the material the load wouldbe; o short'weight. To

avoid this, I provide means for "momentarily-- arresting the dnwh'wardmovcment-of the re ceptaole until the wulali'mm' ie'aabstantially in equipoise, at which time the feed is completely cut off and the receptacle released, so

that it may tilt to dump theJload and then right itself and ascendjunder the weight on the weight-pan of the machine for the pur pose of relieving the vessel from the influence of the live force of the material fed thereto, as fully described and illustrated in my application above referred to. I have found,

however, that even this precaution does not always prevent short weight, and to avoid this I provide means for arresting the downward motion of the receptacle, not only before the scale-beam is in equipoise and before the feed is completely out off, but also .when

said scale-beam is in equipoise, toindicate that the receptacle contains the proper .quantity of material; but that my invention may be fully understood I will describe the same in detail, reference being had to the accompanying drawings, in which- Figure 1 is a front view of a weighing-ma chine embodying my invention and illustrating the mechanisms in their relative positions when the scale-beam is in equipoise. Fig. 2 is a like fragmentary view illustrating certain elements of the mechanisms in their relative positions when the cutoff gate is open Wide. Fig. 3 is a side elevation of the machine, and Fig. 4 a detail view. a 'The operative devices of the machine are supported from front and rear frames at a, connected by a top plate ct and by tie-rods a and in said top plate is hung the feed-hopper E, provided at opposite ends with 'st-ud-bearings e, on which are loosely mounted tubular journals f, secured to the arms 9 of the cutoff gate G, which in this manner canswing on said bearings. To each of the journals f is secured a sleeve or collar f having a projection or cam f.

To stud d on the front and rear frames a a, are fulcrnm'ed lovers 1) D, and on the front gate-journal f is secured a -radial arm F, to

the free end of which is pivoted one end of "a connecting-rod L, whose opposite end is pivotally connected to the freeend of the'longer arm P of a two-armed angular lever, whose short arm P has a convex bearing-surface, upon which bears a roller H on the long arm "of a bell-crank lever H, f ulcrumed at q to a projection on the frontfframe a, and whose permitting the actuating-rod 9 to be moved back intoa normal positiomasby the action of a spring, a means commonly employed Having thus described my invention, what .I claim as new therein, and desire to secure by Letters Patent, is-

1. In a weighing-machine such as described, the combination withthe receptacle for the material to be weighed, the scale-beam from which said receptacle is hung, a lockin g-latch for locking said receptacle against tilting after dropping to a predetermined extent, and

a locking-lever arresting the downward 'movement of said receptacle as the scale-beam is about to reach a position of equ-ipose; of a feed-hopper, a cut-off gate, means for automatically actuating the same to gradually cut off the feed, means operated by said gate during its cut-0E movement to first release the locking-lever and then the locking-latch, and means for momentarily arresting the operation of the latch -releasing mechanism when the scale-beam is in equipose and before the cut-0E gate completely-cuts 01f the feed, for the purpose set forth. I

2, The combination with the tripping-lever N, having stop-shoulder n, the two-armed le ver u whose inner arm is adapted to engage said shoulder, and the cut-off gate out 'of the tubular journals of which carries a radial arm 70; of the tubular lever K pivoted to said radial arm 70 and fulcrumed t'o .the-fulcrum-- stud of lever u, said lever K having perforatedlugs straddling said lever u, a shiftable body, as a ball, containedbin lever K, which latter is provided with a longitudinal slot in register with the outer arm of lever a, substantially as and for the purpose set forth.

MICHAEL EDUARD REISERT.

W'itnesses:

WILLIAM H. MADDEN, KA'roHEN STENZ. 

